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424163ea DJ |
1 | /* Target description support for GDB. |
2 | ||
e2882c85 | 3 | Copyright (C) 2006-2018 Free Software Foundation, Inc. |
424163ea DJ |
4 | |
5 | Contributed by CodeSourcery. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
424163ea DJ |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
424163ea DJ |
21 | |
22 | #include "defs.h" | |
23 | #include "arch-utils.h" | |
23181151 | 24 | #include "gdbcmd.h" |
123dc839 DJ |
25 | #include "gdbtypes.h" |
26 | #include "reggroups.h" | |
424163ea DJ |
27 | #include "target.h" |
28 | #include "target-descriptions.h" | |
29709017 | 29 | #include "vec.h" |
123dc839 | 30 | #include "xml-support.h" |
23181151 | 31 | #include "xml-tdesc.h" |
c3f08eb7 | 32 | #include "osabi.h" |
424163ea | 33 | |
123dc839 DJ |
34 | #include "gdb_obstack.h" |
35 | #include "hashtab.h" | |
6ecd4729 | 36 | #include "inferior.h" |
25aa13e5 | 37 | #include <algorithm> |
27d41eac YQ |
38 | #include "completer.h" |
39 | #include "readline/tilde.h" /* tilde_expand */ | |
424163ea DJ |
40 | |
41 | /* Types. */ | |
42 | ||
129c10bc | 43 | struct property |
29709017 | 44 | { |
129c10bc SM |
45 | property (const std::string &key_, const std::string &value_) |
46 | : key (key_), value (value_) | |
47 | {} | |
48 | ||
49 | std::string key; | |
50 | std::string value; | |
51 | }; | |
29709017 | 52 | |
b8df6ca7 AH |
53 | /* Convert a tdesc_type to a gdb type. */ |
54 | ||
55 | static type * | |
56 | make_gdb_type (struct gdbarch *gdbarch, struct tdesc_type *ttype) | |
57 | { | |
58 | class gdb_type_creator : public tdesc_element_visitor | |
27d41eac | 59 | { |
b8df6ca7 AH |
60 | public: |
61 | gdb_type_creator (struct gdbarch *gdbarch) | |
62 | : m_gdbarch (gdbarch) | |
63 | {} | |
d4a0e8b5 | 64 | |
b8df6ca7 AH |
65 | type *get_type () |
66 | { | |
67 | return m_type; | |
68 | } | |
d4a0e8b5 | 69 | |
b8df6ca7 AH |
70 | void visit (const tdesc_type_builtin *e) override |
71 | { | |
72 | switch (e->kind) | |
73 | { | |
74 | /* Predefined types. */ | |
75 | case TDESC_TYPE_BOOL: | |
76 | m_type = builtin_type (m_gdbarch)->builtin_bool; | |
77 | return; | |
78 | case TDESC_TYPE_INT8: | |
79 | m_type = builtin_type (m_gdbarch)->builtin_int8; | |
80 | return; | |
81 | case TDESC_TYPE_INT16: | |
82 | m_type = builtin_type (m_gdbarch)->builtin_int16; | |
83 | return; | |
84 | case TDESC_TYPE_INT32: | |
85 | m_type = builtin_type (m_gdbarch)->builtin_int32; | |
86 | return; | |
87 | case TDESC_TYPE_INT64: | |
88 | m_type = builtin_type (m_gdbarch)->builtin_int64; | |
89 | return; | |
90 | case TDESC_TYPE_INT128: | |
91 | m_type = builtin_type (m_gdbarch)->builtin_int128; | |
92 | return; | |
93 | case TDESC_TYPE_UINT8: | |
94 | m_type = builtin_type (m_gdbarch)->builtin_uint8; | |
95 | return; | |
96 | case TDESC_TYPE_UINT16: | |
97 | m_type = builtin_type (m_gdbarch)->builtin_uint16; | |
98 | return; | |
99 | case TDESC_TYPE_UINT32: | |
100 | m_type = builtin_type (m_gdbarch)->builtin_uint32; | |
101 | return; | |
102 | case TDESC_TYPE_UINT64: | |
103 | m_type = builtin_type (m_gdbarch)->builtin_uint64; | |
104 | return; | |
105 | case TDESC_TYPE_UINT128: | |
106 | m_type = builtin_type (m_gdbarch)->builtin_uint128; | |
107 | return; | |
108 | case TDESC_TYPE_CODE_PTR: | |
109 | m_type = builtin_type (m_gdbarch)->builtin_func_ptr; | |
110 | return; | |
111 | case TDESC_TYPE_DATA_PTR: | |
112 | m_type = builtin_type (m_gdbarch)->builtin_data_ptr; | |
113 | return; | |
114 | } | |
d4a0e8b5 | 115 | |
b8df6ca7 AH |
116 | m_type = tdesc_find_type (m_gdbarch, e->name.c_str ()); |
117 | if (m_type != NULL) | |
118 | return; | |
27d41eac | 119 | |
b8df6ca7 AH |
120 | switch (e->kind) |
121 | { | |
122 | case TDESC_TYPE_IEEE_SINGLE: | |
123 | m_type = arch_float_type (m_gdbarch, -1, "builtin_type_ieee_single", | |
124 | floatformats_ieee_single); | |
125 | return; | |
126 | ||
127 | case TDESC_TYPE_IEEE_DOUBLE: | |
128 | m_type = arch_float_type (m_gdbarch, -1, "builtin_type_ieee_double", | |
129 | floatformats_ieee_double); | |
130 | return; | |
131 | case TDESC_TYPE_ARM_FPA_EXT: | |
132 | m_type = arch_float_type (m_gdbarch, -1, "builtin_type_arm_ext", | |
133 | floatformats_arm_ext); | |
134 | return; | |
135 | ||
136 | case TDESC_TYPE_I387_EXT: | |
137 | m_type = arch_float_type (m_gdbarch, -1, "builtin_type_i387_ext", | |
138 | floatformats_i387_ext); | |
139 | return; | |
140 | } | |
d4a0e8b5 | 141 | |
b8df6ca7 AH |
142 | internal_error (__FILE__, __LINE__, |
143 | "Type \"%s\" has an unknown kind %d", | |
144 | e->name.c_str (), e->kind); | |
145 | } | |
d4a0e8b5 | 146 | |
b8df6ca7 AH |
147 | void visit (const tdesc_type_vector *e) override |
148 | { | |
149 | m_type = tdesc_find_type (m_gdbarch, e->name.c_str ()); | |
150 | if (m_type != NULL) | |
151 | return; | |
152 | ||
153 | type *element_gdb_type = make_gdb_type (m_gdbarch, e->element_type); | |
154 | m_type = init_vector_type (element_gdb_type, e->count); | |
155 | TYPE_NAME (m_type) = xstrdup (e->name.c_str ()); | |
156 | return; | |
157 | } | |
53c934e9 | 158 | |
b8df6ca7 AH |
159 | void visit (const tdesc_type_with_fields *e) override |
160 | { | |
161 | m_type = tdesc_find_type (m_gdbarch, e->name.c_str ()); | |
162 | if (m_type != NULL) | |
163 | return; | |
d4a0e8b5 | 164 | |
b8df6ca7 AH |
165 | switch (e->kind) |
166 | { | |
167 | case TDESC_TYPE_STRUCT: | |
168 | make_gdb_type_struct (e); | |
169 | return; | |
170 | case TDESC_TYPE_UNION: | |
171 | make_gdb_type_union (e); | |
172 | return; | |
173 | case TDESC_TYPE_FLAGS: | |
174 | make_gdb_type_flags (e); | |
175 | return; | |
176 | case TDESC_TYPE_ENUM: | |
177 | make_gdb_type_enum (e); | |
178 | return; | |
179 | } | |
d4a0e8b5 | 180 | |
b8df6ca7 AH |
181 | internal_error (__FILE__, __LINE__, |
182 | "Type \"%s\" has an unknown kind %d", | |
183 | e->name.c_str (), e->kind); | |
184 | } | |
d4a0e8b5 | 185 | |
b8df6ca7 | 186 | private: |
d4a0e8b5 | 187 | |
b8df6ca7 AH |
188 | void make_gdb_type_struct (const tdesc_type_with_fields *e) |
189 | { | |
190 | m_type = arch_composite_type (m_gdbarch, NULL, TYPE_CODE_STRUCT); | |
191 | TYPE_NAME (m_type) = xstrdup (e->name.c_str ()); | |
192 | TYPE_TAG_NAME (m_type) = TYPE_NAME (m_type); | |
d4a0e8b5 | 193 | |
b8df6ca7 AH |
194 | for (const tdesc_type_field &f : e->fields) |
195 | { | |
196 | if (f.start != -1 && f.end != -1) | |
197 | { | |
198 | /* Bitfield. */ | |
199 | struct field *fld; | |
200 | struct type *field_gdb_type; | |
201 | int bitsize, total_size; | |
202 | ||
203 | /* This invariant should be preserved while creating types. */ | |
204 | gdb_assert (e->size != 0); | |
205 | if (f.type != NULL) | |
206 | field_gdb_type = make_gdb_type (m_gdbarch, f.type); | |
207 | else if (e->size > 4) | |
208 | field_gdb_type = builtin_type (m_gdbarch)->builtin_uint64; | |
209 | else | |
210 | field_gdb_type = builtin_type (m_gdbarch)->builtin_uint32; | |
211 | ||
212 | fld = append_composite_type_field_raw | |
213 | (m_type, xstrdup (f.name.c_str ()), field_gdb_type); | |
214 | ||
215 | /* For little-endian, BITPOS counts from the LSB of | |
216 | the structure and marks the LSB of the field. For | |
217 | big-endian, BITPOS counts from the MSB of the | |
218 | structure and marks the MSB of the field. Either | |
219 | way, it is the number of bits to the "left" of the | |
220 | field. To calculate this in big-endian, we need | |
221 | the total size of the structure. */ | |
222 | bitsize = f.end - f.start + 1; | |
223 | total_size = e->size * TARGET_CHAR_BIT; | |
224 | if (gdbarch_bits_big_endian (m_gdbarch)) | |
225 | SET_FIELD_BITPOS (fld[0], total_size - f.start - bitsize); | |
226 | else | |
227 | SET_FIELD_BITPOS (fld[0], f.start); | |
228 | FIELD_BITSIZE (fld[0]) = bitsize; | |
229 | } | |
230 | else | |
231 | { | |
232 | gdb_assert (f.start == -1 && f.end == -1); | |
233 | type *field_gdb_type = make_gdb_type (m_gdbarch, f.type); | |
234 | append_composite_type_field (m_type, | |
d4a0e8b5 | 235 | xstrdup (f.name.c_str ()), |
b8df6ca7 AH |
236 | field_gdb_type); |
237 | } | |
238 | } | |
d4a0e8b5 | 239 | |
b8df6ca7 AH |
240 | if (e->size != 0) |
241 | TYPE_LENGTH (m_type) = e->size; | |
242 | } | |
d4a0e8b5 | 243 | |
b8df6ca7 AH |
244 | void make_gdb_type_union (const tdesc_type_with_fields *e) |
245 | { | |
246 | m_type = arch_composite_type (m_gdbarch, NULL, TYPE_CODE_UNION); | |
247 | TYPE_NAME (m_type) = xstrdup (e->name.c_str ()); | |
d4a0e8b5 | 248 | |
b8df6ca7 AH |
249 | for (const tdesc_type_field &f : e->fields) |
250 | { | |
251 | type* field_gdb_type = make_gdb_type (m_gdbarch, f.type); | |
252 | append_composite_type_field (m_type, xstrdup (f.name.c_str ()), | |
253 | field_gdb_type); | |
254 | ||
255 | /* If any of the children of a union are vectors, flag the | |
256 | union as a vector also. This allows e.g. a union of two | |
257 | vector types to show up automatically in "info vector". */ | |
258 | if (TYPE_VECTOR (field_gdb_type)) | |
259 | TYPE_VECTOR (m_type) = 1; | |
260 | } | |
261 | } | |
d4a0e8b5 | 262 | |
b8df6ca7 | 263 | void make_gdb_type_flags (const tdesc_type_with_fields *e) |
d4a0e8b5 | 264 | { |
b8df6ca7 AH |
265 | m_type = arch_flags_type (m_gdbarch, e->name.c_str (), |
266 | e->size * TARGET_CHAR_BIT); | |
267 | ||
268 | for (const tdesc_type_field &f : e->fields) | |
269 | { | |
270 | int bitsize = f.end - f.start + 1; | |
271 | ||
272 | gdb_assert (f.type != NULL); | |
273 | type *field_gdb_type = make_gdb_type (m_gdbarch, f.type); | |
274 | append_flags_type_field (m_type, f.start, bitsize, | |
275 | field_gdb_type, f.name.c_str ()); | |
276 | } | |
d4a0e8b5 SM |
277 | } |
278 | ||
b8df6ca7 AH |
279 | void make_gdb_type_enum (const tdesc_type_with_fields *e) |
280 | { | |
281 | m_type = arch_type (m_gdbarch, TYPE_CODE_ENUM, e->size * TARGET_CHAR_BIT, | |
282 | e->name.c_str ()); | |
d4a0e8b5 | 283 | |
b8df6ca7 AH |
284 | TYPE_UNSIGNED (m_type) = 1; |
285 | for (const tdesc_type_field &f : e->fields) | |
286 | { | |
287 | struct field *fld | |
288 | = append_composite_type_field_raw (m_type, | |
289 | xstrdup (f.name.c_str ()), | |
290 | NULL); | |
d4a0e8b5 | 291 | |
b8df6ca7 AH |
292 | SET_FIELD_BITPOS (fld[0], f.start); |
293 | } | |
294 | } | |
295 | ||
296 | /* The gdbarch used. */ | |
297 | struct gdbarch *m_gdbarch; | |
298 | ||
299 | /* The type created. */ | |
300 | type *m_type; | |
301 | }; | |
302 | ||
303 | gdb_type_creator gdb_type (gdbarch); | |
304 | ttype->accept (gdb_type); | |
305 | return gdb_type.get_type (); | |
306 | } | |
123dc839 | 307 | |
123dc839 DJ |
308 | /* A target description. */ |
309 | ||
6eb1e6a8 | 310 | struct target_desc : tdesc_element |
424163ea | 311 | { |
b468ff4c YQ |
312 | target_desc () |
313 | {} | |
314 | ||
3eea796c | 315 | virtual ~target_desc () = default; |
b468ff4c YQ |
316 | |
317 | target_desc (const target_desc &) = delete; | |
318 | void operator= (const target_desc &) = delete; | |
319 | ||
23181151 | 320 | /* The architecture reported by the target, if any. */ |
b468ff4c | 321 | const struct bfd_arch_info *arch = NULL; |
23181151 | 322 | |
08d16641 PA |
323 | /* The osabi reported by the target, if any; GDB_OSABI_UNKNOWN |
324 | otherwise. */ | |
b468ff4c | 325 | enum gdb_osabi osabi = GDB_OSABI_UNKNOWN; |
08d16641 | 326 | |
e35359c5 | 327 | /* The list of compatible architectures reported by the target. */ |
40e2a983 | 328 | std::vector<const bfd_arch_info *> compatible; |
e35359c5 | 329 | |
29709017 | 330 | /* Any architecture-specific properties specified by the target. */ |
129c10bc | 331 | std::vector<property> properties; |
123dc839 DJ |
332 | |
333 | /* The features associated with this target. */ | |
858c9d13 | 334 | std::vector<tdesc_feature_up> features; |
6eb1e6a8 | 335 | |
e98577a9 AH |
336 | /* Used to cache the generated xml version of the target description. */ |
337 | mutable char *xmltarget = nullptr; | |
338 | ||
6eb1e6a8 YQ |
339 | void accept (tdesc_element_visitor &v) const override |
340 | { | |
341 | v.visit_pre (this); | |
342 | ||
3eea796c | 343 | for (const tdesc_feature_up &feature : features) |
6eb1e6a8 YQ |
344 | feature->accept (v); |
345 | ||
346 | v.visit_post (this); | |
347 | } | |
27d41eac YQ |
348 | |
349 | bool operator== (const target_desc &other) const | |
350 | { | |
351 | if (arch != other.arch) | |
352 | return false; | |
353 | ||
354 | if (osabi != other.osabi) | |
355 | return false; | |
356 | ||
3eea796c | 357 | if (features.size () != other.features.size ()) |
27d41eac YQ |
358 | return false; |
359 | ||
3eea796c | 360 | for (int ix = 0; ix < features.size (); ix++) |
27d41eac | 361 | { |
3eea796c SM |
362 | const tdesc_feature_up &feature1 = features[ix]; |
363 | const tdesc_feature_up &feature2 = other.features[ix]; | |
27d41eac | 364 | |
3eea796c | 365 | if (feature1 != feature2 && *feature1 != *feature2) |
27d41eac YQ |
366 | return false; |
367 | } | |
368 | ||
369 | return true; | |
370 | } | |
371 | ||
372 | bool operator!= (const target_desc &other) const | |
373 | { | |
374 | return !(*this == other); | |
375 | } | |
123dc839 DJ |
376 | }; |
377 | ||
378 | /* Per-architecture data associated with a target description. The | |
379 | target description may be shared by multiple architectures, but | |
380 | this data is private to one gdbarch. */ | |
381 | ||
f0cddbef | 382 | struct tdesc_arch_reg |
ad068eab | 383 | { |
f0cddbef SM |
384 | tdesc_arch_reg (tdesc_reg *reg_, struct type *type_) |
385 | : reg (reg_), type (type_) | |
386 | {} | |
387 | ||
ad068eab UW |
388 | struct tdesc_reg *reg; |
389 | struct type *type; | |
f0cddbef | 390 | }; |
ad068eab | 391 | |
123dc839 DJ |
392 | struct tdesc_arch_data |
393 | { | |
ad068eab | 394 | /* A list of register/type pairs, indexed by GDB's internal register number. |
123dc839 DJ |
395 | During initialization of the gdbarch this list is used to store |
396 | registers which the architecture assigns a fixed register number. | |
397 | Registers which are NULL in this array, or off the end, are | |
398 | treated as zero-sized and nameless (i.e. placeholders in the | |
399 | numbering). */ | |
f0cddbef | 400 | std::vector<tdesc_arch_reg> arch_regs; |
123dc839 DJ |
401 | |
402 | /* Functions which report the register name, type, and reggroups for | |
403 | pseudo-registers. */ | |
f0cddbef SM |
404 | gdbarch_register_name_ftype *pseudo_register_name = NULL; |
405 | gdbarch_register_type_ftype *pseudo_register_type = NULL; | |
406 | gdbarch_register_reggroup_p_ftype *pseudo_register_reggroup_p = NULL; | |
424163ea DJ |
407 | }; |
408 | ||
6ecd4729 PA |
409 | /* Info about an inferior's target description. There's one of these |
410 | for each inferior. */ | |
424163ea | 411 | |
6ecd4729 PA |
412 | struct target_desc_info |
413 | { | |
414 | /* A flag indicating that a description has already been fetched | |
415 | from the target, so it should not be queried again. */ | |
416 | ||
417 | int fetched; | |
424163ea | 418 | |
6ecd4729 PA |
419 | /* The description fetched from the target, or NULL if the target |
420 | did not supply any description. Only valid when | |
421 | target_desc_fetched is set. Only the description initialization | |
422 | code should access this; normally, the description should be | |
423 | accessed through the gdbarch object. */ | |
424163ea | 424 | |
6ecd4729 | 425 | const struct target_desc *tdesc; |
424163ea | 426 | |
6ecd4729 PA |
427 | /* The filename to read a target description from, as set by "set |
428 | tdesc filename ..." */ | |
424163ea | 429 | |
6ecd4729 PA |
430 | char *filename; |
431 | }; | |
23181151 | 432 | |
6ecd4729 PA |
433 | /* Get the inferior INF's target description info, allocating one on |
434 | the stop if necessary. */ | |
23181151 | 435 | |
6ecd4729 PA |
436 | static struct target_desc_info * |
437 | get_tdesc_info (struct inferior *inf) | |
438 | { | |
439 | if (inf->tdesc_info == NULL) | |
440 | inf->tdesc_info = XCNEW (struct target_desc_info); | |
441 | return inf->tdesc_info; | |
442 | } | |
23181151 | 443 | |
123dc839 DJ |
444 | /* A handle for architecture-specific data associated with the |
445 | target description (see struct tdesc_arch_data). */ | |
446 | ||
447 | static struct gdbarch_data *tdesc_data; | |
448 | ||
6ecd4729 PA |
449 | /* See target-descriptions.h. */ |
450 | ||
451 | int | |
452 | target_desc_info_from_user_p (struct target_desc_info *info) | |
453 | { | |
454 | return info != NULL && info->filename != NULL; | |
455 | } | |
456 | ||
457 | /* See target-descriptions.h. */ | |
458 | ||
459 | void | |
460 | copy_inferior_target_desc_info (struct inferior *destinf, struct inferior *srcinf) | |
461 | { | |
462 | struct target_desc_info *src = get_tdesc_info (srcinf); | |
463 | struct target_desc_info *dest = get_tdesc_info (destinf); | |
464 | ||
465 | dest->fetched = src->fetched; | |
466 | dest->tdesc = src->tdesc; | |
467 | dest->filename = src->filename != NULL ? xstrdup (src->filename) : NULL; | |
468 | } | |
469 | ||
470 | /* See target-descriptions.h. */ | |
471 | ||
472 | void | |
473 | target_desc_info_free (struct target_desc_info *tdesc_info) | |
474 | { | |
475 | if (tdesc_info != NULL) | |
476 | { | |
477 | xfree (tdesc_info->filename); | |
478 | xfree (tdesc_info); | |
479 | } | |
480 | } | |
481 | ||
482 | /* Convenience helper macros. */ | |
483 | ||
484 | #define target_desc_fetched \ | |
485 | get_tdesc_info (current_inferior ())->fetched | |
486 | #define current_target_desc \ | |
487 | get_tdesc_info (current_inferior ())->tdesc | |
488 | #define target_description_filename \ | |
489 | get_tdesc_info (current_inferior ())->filename | |
490 | ||
491 | /* The string manipulated by the "set tdesc filename ..." command. */ | |
492 | ||
493 | static char *tdesc_filename_cmd_string; | |
494 | ||
424163ea DJ |
495 | /* Fetch the current target's description, and switch the current |
496 | architecture to one which incorporates that description. */ | |
497 | ||
498 | void | |
499 | target_find_description (void) | |
500 | { | |
501 | /* If we've already fetched a description from the target, don't do | |
502 | it again. This allows a target to fetch the description early, | |
503 | during its to_open or to_create_inferior, if it needs extra | |
504 | information about the target to initialize. */ | |
505 | if (target_desc_fetched) | |
506 | return; | |
507 | ||
508 | /* The current architecture should not have any target description | |
509 | specified. It should have been cleared, e.g. when we | |
510 | disconnected from the previous target. */ | |
f5656ead | 511 | gdb_assert (gdbarch_target_desc (target_gdbarch ()) == NULL); |
424163ea | 512 | |
23181151 DJ |
513 | /* First try to fetch an XML description from the user-specified |
514 | file. */ | |
515 | current_target_desc = NULL; | |
516 | if (target_description_filename != NULL | |
517 | && *target_description_filename != '\0') | |
518 | current_target_desc | |
519 | = file_read_description_xml (target_description_filename); | |
520 | ||
521 | /* Next try to read the description from the current target using | |
522 | target objects. */ | |
523 | if (current_target_desc == NULL) | |
524 | current_target_desc = target_read_description_xml (¤t_target); | |
525 | ||
526 | /* If that failed try a target-specific hook. */ | |
527 | if (current_target_desc == NULL) | |
528 | current_target_desc = target_read_description (¤t_target); | |
424163ea DJ |
529 | |
530 | /* If a non-NULL description was returned, then update the current | |
531 | architecture. */ | |
532 | if (current_target_desc) | |
533 | { | |
534 | struct gdbarch_info info; | |
535 | ||
536 | gdbarch_info_init (&info); | |
537 | info.target_desc = current_target_desc; | |
538 | if (!gdbarch_update_p (info)) | |
123dc839 DJ |
539 | warning (_("Architecture rejected target-supplied description")); |
540 | else | |
541 | { | |
542 | struct tdesc_arch_data *data; | |
543 | ||
19ba03f4 SM |
544 | data = ((struct tdesc_arch_data *) |
545 | gdbarch_data (target_gdbarch (), tdesc_data)); | |
123dc839 | 546 | if (tdesc_has_registers (current_target_desc) |
f0cddbef | 547 | && data->arch_regs.empty ()) |
123dc839 DJ |
548 | warning (_("Target-supplied registers are not supported " |
549 | "by the current architecture")); | |
550 | } | |
424163ea DJ |
551 | } |
552 | ||
553 | /* Now that we know this description is usable, record that we | |
554 | fetched it. */ | |
555 | target_desc_fetched = 1; | |
556 | } | |
557 | ||
558 | /* Discard any description fetched from the current target, and switch | |
559 | the current architecture to one with no target description. */ | |
560 | ||
561 | void | |
562 | target_clear_description (void) | |
563 | { | |
564 | struct gdbarch_info info; | |
565 | ||
566 | if (!target_desc_fetched) | |
567 | return; | |
568 | ||
569 | target_desc_fetched = 0; | |
570 | current_target_desc = NULL; | |
571 | ||
572 | gdbarch_info_init (&info); | |
573 | if (!gdbarch_update_p (info)) | |
574 | internal_error (__FILE__, __LINE__, | |
575 | _("Could not remove target-supplied description")); | |
576 | } | |
577 | ||
578 | /* Return the global current target description. This should only be | |
579 | used by gdbarch initialization code; most access should be through | |
580 | an existing gdbarch. */ | |
581 | ||
582 | const struct target_desc * | |
583 | target_current_description (void) | |
584 | { | |
585 | if (target_desc_fetched) | |
586 | return current_target_desc; | |
587 | ||
588 | return NULL; | |
589 | } | |
e35359c5 UW |
590 | |
591 | /* Return non-zero if this target description is compatible | |
592 | with the given BFD architecture. */ | |
593 | ||
594 | int | |
595 | tdesc_compatible_p (const struct target_desc *target_desc, | |
596 | const struct bfd_arch_info *arch) | |
597 | { | |
40e2a983 | 598 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
599 | { |
600 | if (compat == arch | |
601 | || arch->compatible (arch, compat) | |
602 | || compat->compatible (compat, arch)) | |
603 | return 1; | |
604 | } | |
605 | ||
606 | return 0; | |
607 | } | |
23181151 DJ |
608 | \f |
609 | ||
123dc839 | 610 | /* Direct accessors for target descriptions. */ |
424163ea | 611 | |
29709017 DJ |
612 | /* Return the string value of a property named KEY, or NULL if the |
613 | property was not specified. */ | |
614 | ||
615 | const char * | |
616 | tdesc_property (const struct target_desc *target_desc, const char *key) | |
617 | { | |
129c10bc SM |
618 | for (const property &prop : target_desc->properties) |
619 | if (prop.key == key) | |
620 | return prop.value.c_str (); | |
29709017 DJ |
621 | |
622 | return NULL; | |
623 | } | |
624 | ||
23181151 DJ |
625 | /* Return the BFD architecture associated with this target |
626 | description, or NULL if no architecture was specified. */ | |
627 | ||
628 | const struct bfd_arch_info * | |
629 | tdesc_architecture (const struct target_desc *target_desc) | |
630 | { | |
631 | return target_desc->arch; | |
632 | } | |
08d16641 | 633 | |
d278f585 AH |
634 | /* See common/tdesc.h. */ |
635 | ||
636 | const char * | |
637 | tdesc_architecture_name (const struct target_desc *target_desc) | |
638 | { | |
639 | return target_desc->arch->printable_name; | |
640 | } | |
641 | ||
08d16641 PA |
642 | /* Return the OSABI associated with this target description, or |
643 | GDB_OSABI_UNKNOWN if no osabi was specified. */ | |
644 | ||
645 | enum gdb_osabi | |
646 | tdesc_osabi (const struct target_desc *target_desc) | |
647 | { | |
648 | return target_desc->osabi; | |
649 | } | |
650 | ||
d278f585 AH |
651 | /* See common/tdesc.h. */ |
652 | ||
653 | const char * | |
654 | tdesc_osabi_name (const struct target_desc *target_desc) | |
655 | { | |
656 | enum gdb_osabi osabi = tdesc_osabi (target_desc); | |
657 | if (osabi > GDB_OSABI_UNKNOWN && osabi < GDB_OSABI_INVALID) | |
658 | return gdbarch_osabi_name (osabi); | |
659 | return nullptr; | |
660 | } | |
23181151 | 661 | |
123dc839 DJ |
662 | /* Return 1 if this target description includes any registers. */ |
663 | ||
664 | int | |
665 | tdesc_has_registers (const struct target_desc *target_desc) | |
666 | { | |
123dc839 DJ |
667 | if (target_desc == NULL) |
668 | return 0; | |
669 | ||
3eea796c | 670 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 | 671 | if (!feature->registers.empty ()) |
123dc839 DJ |
672 | return 1; |
673 | ||
674 | return 0; | |
675 | } | |
676 | ||
677 | /* Return the feature with the given name, if present, or NULL if | |
678 | the named feature is not found. */ | |
679 | ||
680 | const struct tdesc_feature * | |
681 | tdesc_find_feature (const struct target_desc *target_desc, | |
682 | const char *name) | |
683 | { | |
3eea796c | 684 | for (const tdesc_feature_up &feature : target_desc->features) |
f65ff9f9 | 685 | if (feature->name == name) |
3eea796c | 686 | return feature.get (); |
123dc839 DJ |
687 | |
688 | return NULL; | |
689 | } | |
690 | ||
691 | /* Return the name of FEATURE. */ | |
692 | ||
693 | const char * | |
694 | tdesc_feature_name (const struct tdesc_feature *feature) | |
695 | { | |
f65ff9f9 | 696 | return feature->name.c_str (); |
123dc839 DJ |
697 | } |
698 | ||
9fd3625f L |
699 | /* Lookup type associated with ID. */ |
700 | ||
701 | struct type * | |
702 | tdesc_find_type (struct gdbarch *gdbarch, const char *id) | |
703 | { | |
f0cddbef SM |
704 | tdesc_arch_data *data |
705 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
9fd3625f | 706 | |
f0cddbef | 707 | for (const tdesc_arch_reg ® : data->arch_regs) |
9fd3625f | 708 | { |
f0cddbef SM |
709 | if (reg.reg |
710 | && reg.reg->tdesc_type | |
711 | && reg.type | |
712 | && reg.reg->tdesc_type->name == id) | |
713 | return reg.type; | |
9fd3625f L |
714 | } |
715 | ||
716 | return NULL; | |
717 | } | |
718 | ||
123dc839 DJ |
719 | /* Support for registers from target descriptions. */ |
720 | ||
721 | /* Construct the per-gdbarch data. */ | |
722 | ||
723 | static void * | |
724 | tdesc_data_init (struct obstack *obstack) | |
725 | { | |
726 | struct tdesc_arch_data *data; | |
727 | ||
728 | data = OBSTACK_ZALLOC (obstack, struct tdesc_arch_data); | |
f0cddbef SM |
729 | new (data) tdesc_arch_data (); |
730 | ||
123dc839 DJ |
731 | return data; |
732 | } | |
733 | ||
734 | /* Similar, but for the temporary copy used during architecture | |
735 | initialization. */ | |
736 | ||
737 | struct tdesc_arch_data * | |
738 | tdesc_data_alloc (void) | |
739 | { | |
f0cddbef | 740 | return new tdesc_arch_data (); |
123dc839 DJ |
741 | } |
742 | ||
743 | /* Free something allocated by tdesc_data_alloc, if it is not going | |
744 | to be used (for instance if it was unsuitable for the | |
745 | architecture). */ | |
746 | ||
747 | void | |
748 | tdesc_data_cleanup (void *data_untyped) | |
749 | { | |
19ba03f4 | 750 | struct tdesc_arch_data *data = (struct tdesc_arch_data *) data_untyped; |
123dc839 | 751 | |
f0cddbef | 752 | delete data; |
123dc839 DJ |
753 | } |
754 | ||
755 | /* Search FEATURE for a register named NAME. */ | |
756 | ||
7cc46491 DJ |
757 | static struct tdesc_reg * |
758 | tdesc_find_register_early (const struct tdesc_feature *feature, | |
759 | const char *name) | |
123dc839 | 760 | { |
c9c895b9 | 761 | for (const tdesc_reg_up ® : feature->registers) |
a8142ee1 | 762 | if (strcasecmp (reg->name.c_str (), name) == 0) |
c9c895b9 | 763 | return reg.get (); |
123dc839 | 764 | |
7cc46491 DJ |
765 | return NULL; |
766 | } | |
767 | ||
768 | /* Search FEATURE for a register named NAME. Assign REGNO to it. */ | |
769 | ||
770 | int | |
771 | tdesc_numbered_register (const struct tdesc_feature *feature, | |
772 | struct tdesc_arch_data *data, | |
773 | int regno, const char *name) | |
774 | { | |
775 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
776 | ||
777 | if (reg == NULL) | |
778 | return 0; | |
779 | ||
780 | /* Make sure the vector includes a REGNO'th element. */ | |
f0cddbef SM |
781 | while (regno >= data->arch_regs.size ()) |
782 | data->arch_regs.emplace_back (nullptr, nullptr); | |
783 | ||
784 | data->arch_regs[regno] = tdesc_arch_reg (reg, NULL); | |
ad068eab | 785 | |
7cc46491 | 786 | return 1; |
123dc839 DJ |
787 | } |
788 | ||
58d6951d DJ |
789 | /* Search FEATURE for a register named NAME, but do not assign a fixed |
790 | register number to it. */ | |
791 | ||
792 | int | |
793 | tdesc_unnumbered_register (const struct tdesc_feature *feature, | |
794 | const char *name) | |
795 | { | |
796 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
797 | ||
798 | if (reg == NULL) | |
799 | return 0; | |
800 | ||
801 | return 1; | |
802 | } | |
803 | ||
7cc46491 DJ |
804 | /* Search FEATURE for a register whose name is in NAMES and assign |
805 | REGNO to it. */ | |
123dc839 DJ |
806 | |
807 | int | |
808 | tdesc_numbered_register_choices (const struct tdesc_feature *feature, | |
809 | struct tdesc_arch_data *data, | |
810 | int regno, const char *const names[]) | |
811 | { | |
812 | int i; | |
813 | ||
814 | for (i = 0; names[i] != NULL; i++) | |
815 | if (tdesc_numbered_register (feature, data, regno, names[i])) | |
816 | return 1; | |
817 | ||
818 | return 0; | |
819 | } | |
820 | ||
7cc46491 DJ |
821 | /* Search FEATURE for a register named NAME, and return its size in |
822 | bits. The register must exist. */ | |
823 | ||
824 | int | |
825 | tdesc_register_size (const struct tdesc_feature *feature, | |
826 | const char *name) | |
827 | { | |
828 | struct tdesc_reg *reg = tdesc_find_register_early (feature, name); | |
829 | ||
830 | gdb_assert (reg != NULL); | |
831 | return reg->bitsize; | |
832 | } | |
833 | ||
123dc839 DJ |
834 | /* Look up a register by its GDB internal register number. */ |
835 | ||
ad068eab UW |
836 | static struct tdesc_arch_reg * |
837 | tdesc_find_arch_register (struct gdbarch *gdbarch, int regno) | |
123dc839 | 838 | { |
123dc839 DJ |
839 | struct tdesc_arch_data *data; |
840 | ||
19ba03f4 | 841 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
f0cddbef SM |
842 | if (regno < data->arch_regs.size ()) |
843 | return &data->arch_regs[regno]; | |
123dc839 DJ |
844 | else |
845 | return NULL; | |
846 | } | |
847 | ||
ad068eab UW |
848 | static struct tdesc_reg * |
849 | tdesc_find_register (struct gdbarch *gdbarch, int regno) | |
850 | { | |
851 | struct tdesc_arch_reg *reg = tdesc_find_arch_register (gdbarch, regno); | |
5d502164 | 852 | |
ad068eab UW |
853 | return reg? reg->reg : NULL; |
854 | } | |
855 | ||
f8b73d13 DJ |
856 | /* Return the name of register REGNO, from the target description or |
857 | from an architecture-provided pseudo_register_name method. */ | |
858 | ||
859 | const char * | |
d93859e2 | 860 | tdesc_register_name (struct gdbarch *gdbarch, int regno) |
123dc839 | 861 | { |
d93859e2 UW |
862 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
863 | int num_regs = gdbarch_num_regs (gdbarch); | |
864 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
123dc839 DJ |
865 | |
866 | if (reg != NULL) | |
a8142ee1 | 867 | return reg->name.c_str (); |
123dc839 DJ |
868 | |
869 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
870 | { | |
19ba03f4 SM |
871 | struct tdesc_arch_data *data |
872 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 873 | |
123dc839 | 874 | gdb_assert (data->pseudo_register_name != NULL); |
d93859e2 | 875 | return data->pseudo_register_name (gdbarch, regno); |
123dc839 DJ |
876 | } |
877 | ||
878 | return ""; | |
879 | } | |
880 | ||
58d6951d | 881 | struct type * |
123dc839 DJ |
882 | tdesc_register_type (struct gdbarch *gdbarch, int regno) |
883 | { | |
ad068eab UW |
884 | struct tdesc_arch_reg *arch_reg = tdesc_find_arch_register (gdbarch, regno); |
885 | struct tdesc_reg *reg = arch_reg? arch_reg->reg : NULL; | |
123dc839 DJ |
886 | int num_regs = gdbarch_num_regs (gdbarch); |
887 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
888 | ||
889 | if (reg == NULL && regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
890 | { | |
19ba03f4 SM |
891 | struct tdesc_arch_data *data |
892 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 893 | |
123dc839 DJ |
894 | gdb_assert (data->pseudo_register_type != NULL); |
895 | return data->pseudo_register_type (gdbarch, regno); | |
896 | } | |
897 | ||
898 | if (reg == NULL) | |
899 | /* Return "int0_t", since "void" has a misleading size of one. */ | |
df4df182 | 900 | return builtin_type (gdbarch)->builtin_int0; |
123dc839 | 901 | |
ad068eab | 902 | if (arch_reg->type == NULL) |
123dc839 | 903 | { |
ad068eab UW |
904 | /* First check for a predefined or target defined type. */ |
905 | if (reg->tdesc_type) | |
b8df6ca7 | 906 | arch_reg->type = make_gdb_type (gdbarch, reg->tdesc_type); |
ad068eab UW |
907 | |
908 | /* Next try size-sensitive type shortcuts. */ | |
a8142ee1 | 909 | else if (reg->type == "float") |
ad068eab UW |
910 | { |
911 | if (reg->bitsize == gdbarch_float_bit (gdbarch)) | |
912 | arch_reg->type = builtin_type (gdbarch)->builtin_float; | |
913 | else if (reg->bitsize == gdbarch_double_bit (gdbarch)) | |
914 | arch_reg->type = builtin_type (gdbarch)->builtin_double; | |
915 | else if (reg->bitsize == gdbarch_long_double_bit (gdbarch)) | |
916 | arch_reg->type = builtin_type (gdbarch)->builtin_long_double; | |
917 | else | |
918 | { | |
919 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
a8142ee1 | 920 | reg->name.c_str (), reg->bitsize); |
ad068eab UW |
921 | arch_reg->type = builtin_type (gdbarch)->builtin_double; |
922 | } | |
923 | } | |
a8142ee1 | 924 | else if (reg->type == "int") |
ad068eab UW |
925 | { |
926 | if (reg->bitsize == gdbarch_long_bit (gdbarch)) | |
927 | arch_reg->type = builtin_type (gdbarch)->builtin_long; | |
928 | else if (reg->bitsize == TARGET_CHAR_BIT) | |
929 | arch_reg->type = builtin_type (gdbarch)->builtin_char; | |
930 | else if (reg->bitsize == gdbarch_short_bit (gdbarch)) | |
931 | arch_reg->type = builtin_type (gdbarch)->builtin_short; | |
932 | else if (reg->bitsize == gdbarch_int_bit (gdbarch)) | |
933 | arch_reg->type = builtin_type (gdbarch)->builtin_int; | |
934 | else if (reg->bitsize == gdbarch_long_long_bit (gdbarch)) | |
935 | arch_reg->type = builtin_type (gdbarch)->builtin_long_long; | |
936 | else if (reg->bitsize == gdbarch_ptr_bit (gdbarch)) | |
c378eb4e | 937 | /* A bit desperate by this point... */ |
ad068eab UW |
938 | arch_reg->type = builtin_type (gdbarch)->builtin_data_ptr; |
939 | else | |
940 | { | |
941 | warning (_("Register \"%s\" has an unsupported size (%d bits)"), | |
a8142ee1 | 942 | reg->name.c_str (), reg->bitsize); |
ad068eab UW |
943 | arch_reg->type = builtin_type (gdbarch)->builtin_long; |
944 | } | |
945 | } | |
946 | ||
947 | if (arch_reg->type == NULL) | |
948 | internal_error (__FILE__, __LINE__, | |
949 | "Register \"%s\" has an unknown type \"%s\"", | |
a8142ee1 | 950 | reg->name.c_str (), reg->type.c_str ()); |
123dc839 | 951 | } |
123dc839 | 952 | |
ad068eab | 953 | return arch_reg->type; |
123dc839 DJ |
954 | } |
955 | ||
956 | static int | |
957 | tdesc_remote_register_number (struct gdbarch *gdbarch, int regno) | |
958 | { | |
959 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); | |
960 | ||
961 | if (reg != NULL) | |
962 | return reg->target_regnum; | |
963 | else | |
964 | return -1; | |
965 | } | |
966 | ||
967 | /* Check whether REGNUM is a member of REGGROUP. Registers from the | |
cef0f868 SH |
968 | target description may be classified as general, float, vector or other |
969 | register groups registered with reggroup_add(). Unlike a gdbarch | |
970 | register_reggroup_p method, this function will return -1 if it does not | |
971 | know; the caller should handle registers with no specified group. | |
972 | ||
973 | The names of containing features are not used. This might be extended | |
974 | to display registers in some more useful groupings. | |
123dc839 DJ |
975 | |
976 | The save-restore flag is also implemented here. */ | |
977 | ||
f8b73d13 DJ |
978 | int |
979 | tdesc_register_in_reggroup_p (struct gdbarch *gdbarch, int regno, | |
980 | struct reggroup *reggroup) | |
123dc839 | 981 | { |
123dc839 DJ |
982 | struct tdesc_reg *reg = tdesc_find_register (gdbarch, regno); |
983 | ||
cef0f868 SH |
984 | if (reg != NULL && !reg->group.empty () |
985 | && (reg->group == reggroup_name (reggroup))) | |
986 | return 1; | |
123dc839 DJ |
987 | |
988 | if (reg != NULL | |
989 | && (reggroup == save_reggroup || reggroup == restore_reggroup)) | |
990 | return reg->save_restore; | |
991 | ||
f8b73d13 DJ |
992 | return -1; |
993 | } | |
994 | ||
995 | /* Check whether REGNUM is a member of REGGROUP. Registers with no | |
996 | group specified go to the default reggroup function and are handled | |
997 | by type. */ | |
998 | ||
999 | static int | |
1000 | tdesc_register_reggroup_p (struct gdbarch *gdbarch, int regno, | |
1001 | struct reggroup *reggroup) | |
1002 | { | |
1003 | int num_regs = gdbarch_num_regs (gdbarch); | |
1004 | int num_pseudo_regs = gdbarch_num_pseudo_regs (gdbarch); | |
1005 | int ret; | |
1006 | ||
1007 | if (regno >= num_regs && regno < num_regs + num_pseudo_regs) | |
1008 | { | |
19ba03f4 SM |
1009 | struct tdesc_arch_data *data |
1010 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
5d502164 | 1011 | |
58d6951d DJ |
1012 | if (data->pseudo_register_reggroup_p != NULL) |
1013 | return data->pseudo_register_reggroup_p (gdbarch, regno, reggroup); | |
1014 | /* Otherwise fall through to the default reggroup_p. */ | |
f8b73d13 DJ |
1015 | } |
1016 | ||
1017 | ret = tdesc_register_in_reggroup_p (gdbarch, regno, reggroup); | |
1018 | if (ret != -1) | |
1019 | return ret; | |
1020 | ||
123dc839 DJ |
1021 | return default_register_reggroup_p (gdbarch, regno, reggroup); |
1022 | } | |
1023 | ||
1024 | /* Record architecture-specific functions to call for pseudo-register | |
1025 | support. */ | |
1026 | ||
1027 | void | |
1028 | set_tdesc_pseudo_register_name (struct gdbarch *gdbarch, | |
1029 | gdbarch_register_name_ftype *pseudo_name) | |
1030 | { | |
19ba03f4 SM |
1031 | struct tdesc_arch_data *data |
1032 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1033 | |
1034 | data->pseudo_register_name = pseudo_name; | |
1035 | } | |
1036 | ||
1037 | void | |
1038 | set_tdesc_pseudo_register_type (struct gdbarch *gdbarch, | |
1039 | gdbarch_register_type_ftype *pseudo_type) | |
1040 | { | |
19ba03f4 SM |
1041 | struct tdesc_arch_data *data |
1042 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1043 | |
1044 | data->pseudo_register_type = pseudo_type; | |
1045 | } | |
1046 | ||
1047 | void | |
1048 | set_tdesc_pseudo_register_reggroup_p | |
1049 | (struct gdbarch *gdbarch, | |
1050 | gdbarch_register_reggroup_p_ftype *pseudo_reggroup_p) | |
1051 | { | |
19ba03f4 SM |
1052 | struct tdesc_arch_data *data |
1053 | = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); | |
123dc839 DJ |
1054 | |
1055 | data->pseudo_register_reggroup_p = pseudo_reggroup_p; | |
1056 | } | |
1057 | ||
1058 | /* Update GDBARCH to use the target description for registers. */ | |
1059 | ||
1060 | void | |
1061 | tdesc_use_registers (struct gdbarch *gdbarch, | |
7cc46491 | 1062 | const struct target_desc *target_desc, |
123dc839 DJ |
1063 | struct tdesc_arch_data *early_data) |
1064 | { | |
1065 | int num_regs = gdbarch_num_regs (gdbarch); | |
123dc839 DJ |
1066 | struct tdesc_arch_data *data; |
1067 | htab_t reg_hash; | |
1068 | ||
123dc839 DJ |
1069 | /* We can't use the description for registers if it doesn't describe |
1070 | any. This function should only be called after validating | |
1071 | registers, so the caller should know that registers are | |
1072 | included. */ | |
1073 | gdb_assert (tdesc_has_registers (target_desc)); | |
1074 | ||
19ba03f4 | 1075 | data = (struct tdesc_arch_data *) gdbarch_data (gdbarch, tdesc_data); |
ad068eab | 1076 | data->arch_regs = early_data->arch_regs; |
f0cddbef | 1077 | delete early_data; |
123dc839 DJ |
1078 | |
1079 | /* Build up a set of all registers, so that we can assign register | |
1080 | numbers where needed. The hash table expands as necessary, so | |
1081 | the initial size is arbitrary. */ | |
1082 | reg_hash = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
3eea796c | 1083 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 | 1084 | for (const tdesc_reg_up ® : feature->registers) |
123dc839 | 1085 | { |
c9c895b9 | 1086 | void **slot = htab_find_slot (reg_hash, reg.get (), INSERT); |
123dc839 | 1087 | |
c9c895b9 | 1088 | *slot = reg.get (); |
cef0f868 SH |
1089 | /* Add reggroup if its new. */ |
1090 | if (!reg->group.empty ()) | |
1091 | if (reggroup_find (gdbarch, reg->group.c_str ()) == NULL) | |
1092 | reggroup_add (gdbarch, reggroup_gdbarch_new (gdbarch, | |
1093 | reg->group.c_str (), | |
1094 | USER_REGGROUP)); | |
123dc839 DJ |
1095 | } |
1096 | ||
1097 | /* Remove any registers which were assigned numbers by the | |
1098 | architecture. */ | |
f0cddbef SM |
1099 | for (const tdesc_arch_reg &arch_reg : data->arch_regs) |
1100 | if (arch_reg.reg != NULL) | |
1101 | htab_remove_elt (reg_hash, arch_reg.reg); | |
123dc839 DJ |
1102 | |
1103 | /* Assign numbers to the remaining registers and add them to the | |
f57d151a | 1104 | list of registers. The new numbers are always above gdbarch_num_regs. |
123dc839 DJ |
1105 | Iterate over the features, not the hash table, so that the order |
1106 | matches that in the target description. */ | |
1107 | ||
f0cddbef SM |
1108 | gdb_assert (data->arch_regs.size () <= num_regs); |
1109 | while (data->arch_regs.size () < num_regs) | |
1110 | data->arch_regs.emplace_back (nullptr, nullptr); | |
1111 | ||
3eea796c | 1112 | for (const tdesc_feature_up &feature : target_desc->features) |
c9c895b9 SM |
1113 | for (const tdesc_reg_up ® : feature->registers) |
1114 | if (htab_find (reg_hash, reg.get ()) != NULL) | |
123dc839 | 1115 | { |
f0cddbef | 1116 | data->arch_regs.emplace_back (reg.get (), nullptr); |
123dc839 DJ |
1117 | num_regs++; |
1118 | } | |
1119 | ||
1120 | htab_delete (reg_hash); | |
1121 | ||
1122 | /* Update the architecture. */ | |
1123 | set_gdbarch_num_regs (gdbarch, num_regs); | |
1124 | set_gdbarch_register_name (gdbarch, tdesc_register_name); | |
1125 | set_gdbarch_register_type (gdbarch, tdesc_register_type); | |
1126 | set_gdbarch_remote_register_number (gdbarch, | |
1127 | tdesc_remote_register_number); | |
1128 | set_gdbarch_register_reggroup_p (gdbarch, tdesc_register_reggroup_p); | |
1129 | } | |
123dc839 | 1130 | |
f46cd62a | 1131 | /* See common/tdesc.h. */ |
f49ff000 | 1132 | |
123dc839 | 1133 | struct tdesc_feature * |
3b74854b | 1134 | tdesc_create_feature (struct target_desc *tdesc, const char *name) |
123dc839 | 1135 | { |
72ddacb7 | 1136 | struct tdesc_feature *new_feature = new tdesc_feature (name); |
123dc839 | 1137 | |
3eea796c SM |
1138 | tdesc->features.emplace_back (new_feature); |
1139 | ||
123dc839 DJ |
1140 | return new_feature; |
1141 | } | |
1142 | ||
424163ea DJ |
1143 | struct target_desc * |
1144 | allocate_target_description (void) | |
1145 | { | |
b468ff4c | 1146 | return new target_desc (); |
424163ea | 1147 | } |
29709017 | 1148 | |
23181151 DJ |
1149 | static void |
1150 | free_target_description (void *arg) | |
1151 | { | |
19ba03f4 | 1152 | struct target_desc *target_desc = (struct target_desc *) arg; |
e35359c5 | 1153 | |
b468ff4c | 1154 | delete target_desc; |
23181151 DJ |
1155 | } |
1156 | ||
1157 | struct cleanup * | |
1158 | make_cleanup_free_target_description (struct target_desc *target_desc) | |
1159 | { | |
1160 | return make_cleanup (free_target_description, target_desc); | |
1161 | } | |
1162 | ||
e35359c5 UW |
1163 | void |
1164 | tdesc_add_compatible (struct target_desc *target_desc, | |
1165 | const struct bfd_arch_info *compatible) | |
1166 | { | |
e35359c5 UW |
1167 | /* If this instance of GDB is compiled without BFD support for the |
1168 | compatible architecture, simply ignore it -- we would not be able | |
1169 | to handle it anyway. */ | |
1170 | if (compatible == NULL) | |
1171 | return; | |
1172 | ||
40e2a983 | 1173 | for (const bfd_arch_info *compat : target_desc->compatible) |
e35359c5 UW |
1174 | if (compat == compatible) |
1175 | internal_error (__FILE__, __LINE__, | |
1176 | _("Attempted to add duplicate " | |
1177 | "compatible architecture \"%s\""), | |
1178 | compatible->printable_name); | |
1179 | ||
40e2a983 | 1180 | target_desc->compatible.push_back (compatible); |
e35359c5 UW |
1181 | } |
1182 | ||
29709017 DJ |
1183 | void |
1184 | set_tdesc_property (struct target_desc *target_desc, | |
1185 | const char *key, const char *value) | |
1186 | { | |
29709017 DJ |
1187 | gdb_assert (key != NULL && value != NULL); |
1188 | ||
129c10bc SM |
1189 | if (tdesc_property (target_desc, key) != NULL) |
1190 | internal_error (__FILE__, __LINE__, | |
1191 | _("Attempted to add duplicate property \"%s\""), key); | |
29709017 | 1192 | |
129c10bc | 1193 | target_desc->properties.emplace_back (key, value); |
29709017 | 1194 | } |
23181151 | 1195 | |
f46cd62a | 1196 | /* See common/tdesc.h. */ |
5f035c07 YQ |
1197 | |
1198 | void | |
1199 | set_tdesc_architecture (struct target_desc *target_desc, | |
1200 | const char *name) | |
1201 | { | |
1202 | set_tdesc_architecture (target_desc, bfd_scan_arch (name)); | |
1203 | } | |
1204 | ||
23181151 DJ |
1205 | void |
1206 | set_tdesc_architecture (struct target_desc *target_desc, | |
1207 | const struct bfd_arch_info *arch) | |
1208 | { | |
1209 | target_desc->arch = arch; | |
1210 | } | |
08d16641 | 1211 | |
f46cd62a | 1212 | /* See common/tdesc.h. */ |
5f035c07 YQ |
1213 | |
1214 | void | |
1215 | set_tdesc_osabi (struct target_desc *target_desc, const char *name) | |
1216 | { | |
1217 | set_tdesc_osabi (target_desc, osabi_from_tdesc_string (name)); | |
1218 | } | |
1219 | ||
08d16641 PA |
1220 | void |
1221 | set_tdesc_osabi (struct target_desc *target_desc, enum gdb_osabi osabi) | |
1222 | { | |
1223 | target_desc->osabi = osabi; | |
1224 | } | |
23181151 DJ |
1225 | \f |
1226 | ||
1227 | static struct cmd_list_element *tdesc_set_cmdlist, *tdesc_show_cmdlist; | |
1228 | static struct cmd_list_element *tdesc_unset_cmdlist; | |
1229 | ||
1230 | /* Helper functions for the CLI commands. */ | |
1231 | ||
1232 | static void | |
981a3fb3 | 1233 | set_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1234 | { |
635c7e8a | 1235 | help_list (tdesc_set_cmdlist, "set tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1236 | } |
1237 | ||
1238 | static void | |
981a3fb3 | 1239 | show_tdesc_cmd (const char *args, int from_tty) |
23181151 DJ |
1240 | { |
1241 | cmd_show_list (tdesc_show_cmdlist, from_tty, ""); | |
1242 | } | |
1243 | ||
1244 | static void | |
981a3fb3 | 1245 | unset_tdesc_cmd (const char *args, int from_tty) |
23181151 | 1246 | { |
635c7e8a | 1247 | help_list (tdesc_unset_cmdlist, "unset tdesc ", all_commands, gdb_stdout); |
23181151 DJ |
1248 | } |
1249 | ||
1250 | static void | |
eb4c3f4a | 1251 | set_tdesc_filename_cmd (const char *args, int from_tty, |
23181151 DJ |
1252 | struct cmd_list_element *c) |
1253 | { | |
6ecd4729 PA |
1254 | xfree (target_description_filename); |
1255 | target_description_filename = xstrdup (tdesc_filename_cmd_string); | |
1256 | ||
23181151 DJ |
1257 | target_clear_description (); |
1258 | target_find_description (); | |
1259 | } | |
1260 | ||
1261 | static void | |
1262 | show_tdesc_filename_cmd (struct ui_file *file, int from_tty, | |
1263 | struct cmd_list_element *c, | |
1264 | const char *value) | |
1265 | { | |
6ecd4729 PA |
1266 | value = target_description_filename; |
1267 | ||
23181151 | 1268 | if (value != NULL && *value != '\0') |
3e43a32a | 1269 | printf_filtered (_("The target description will be read from \"%s\".\n"), |
23181151 DJ |
1270 | value); |
1271 | else | |
3e43a32a MS |
1272 | printf_filtered (_("The target description will be " |
1273 | "read from the target.\n")); | |
23181151 DJ |
1274 | } |
1275 | ||
1276 | static void | |
e100df1a | 1277 | unset_tdesc_filename_cmd (const char *args, int from_tty) |
23181151 DJ |
1278 | { |
1279 | xfree (target_description_filename); | |
1280 | target_description_filename = NULL; | |
1281 | target_clear_description (); | |
1282 | target_find_description (); | |
1283 | } | |
1284 | ||
6eb1e6a8 YQ |
1285 | /* Print target description in C. */ |
1286 | ||
1287 | class print_c_tdesc : public tdesc_element_visitor | |
1288 | { | |
1289 | public: | |
1290 | print_c_tdesc (std::string &filename_after_features) | |
1291 | : m_filename_after_features (filename_after_features) | |
1292 | { | |
1293 | const char *inp; | |
1294 | char *outp; | |
1295 | const char *filename = lbasename (m_filename_after_features.c_str ()); | |
1296 | ||
1297 | m_function = (char *) xmalloc (strlen (filename) + 1); | |
1298 | for (inp = filename, outp = m_function; *inp != '\0'; inp++) | |
1299 | if (*inp == '.') | |
1300 | break; | |
1301 | else if (*inp == '-') | |
1302 | *outp++ = '_'; | |
1303 | else | |
1304 | *outp++ = *inp; | |
1305 | *outp = '\0'; | |
1306 | ||
1307 | /* Standard boilerplate. */ | |
1308 | printf_unfiltered ("/* THIS FILE IS GENERATED. " | |
1309 | "-*- buffer-read-only: t -*- vi" | |
1310 | ":set ro:\n"); | |
6eb1e6a8 YQ |
1311 | } |
1312 | ||
1313 | ~print_c_tdesc () | |
1314 | { | |
1315 | xfree (m_function); | |
1316 | } | |
1317 | ||
1318 | void visit_pre (const target_desc *e) override | |
1319 | { | |
25aa13e5 YQ |
1320 | printf_unfiltered (" Original: %s */\n\n", |
1321 | lbasename (m_filename_after_features.c_str ())); | |
1322 | ||
6eb1e6a8 YQ |
1323 | printf_unfiltered ("#include \"defs.h\"\n"); |
1324 | printf_unfiltered ("#include \"osabi.h\"\n"); | |
1325 | printf_unfiltered ("#include \"target-descriptions.h\"\n"); | |
1326 | printf_unfiltered ("\n"); | |
1327 | ||
1328 | printf_unfiltered ("struct target_desc *tdesc_%s;\n", m_function); | |
1329 | printf_unfiltered ("static void\n"); | |
1330 | printf_unfiltered ("initialize_tdesc_%s (void)\n", m_function); | |
1331 | printf_unfiltered ("{\n"); | |
1332 | printf_unfiltered | |
1333 | (" struct target_desc *result = allocate_target_description ();\n"); | |
1334 | ||
1335 | if (tdesc_architecture (e) != NULL) | |
1336 | { | |
1337 | printf_unfiltered | |
1338 | (" set_tdesc_architecture (result, bfd_scan_arch (\"%s\"));\n", | |
1339 | tdesc_architecture (e)->printable_name); | |
1340 | printf_unfiltered ("\n"); | |
1341 | } | |
1342 | if (tdesc_osabi (e) > GDB_OSABI_UNKNOWN | |
1343 | && tdesc_osabi (e) < GDB_OSABI_INVALID) | |
1344 | { | |
1345 | printf_unfiltered | |
1346 | (" set_tdesc_osabi (result, osabi_from_tdesc_string (\"%s\"));\n", | |
1347 | gdbarch_osabi_name (tdesc_osabi (e))); | |
1348 | printf_unfiltered ("\n"); | |
1349 | } | |
1350 | ||
23a8d186 | 1351 | for (const bfd_arch_info_type *compatible : e->compatible) |
40e2a983 SM |
1352 | printf_unfiltered |
1353 | (" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n", | |
1354 | compatible->printable_name); | |
6eb1e6a8 | 1355 | |
40e2a983 | 1356 | if (!e->compatible.empty ()) |
6eb1e6a8 YQ |
1357 | printf_unfiltered ("\n"); |
1358 | ||
129c10bc SM |
1359 | for (const property &prop : e->properties) |
1360 | printf_unfiltered (" set_tdesc_property (result, \"%s\", \"%s\");\n", | |
1361 | prop.key.c_str (), prop.value.c_str ()); | |
1362 | ||
6eb1e6a8 YQ |
1363 | printf_unfiltered (" struct tdesc_feature *feature;\n"); |
1364 | } | |
1365 | ||
25aa13e5 | 1366 | void visit_pre (const tdesc_feature *e) override |
6eb1e6a8 YQ |
1367 | { |
1368 | printf_unfiltered ("\n feature = tdesc_create_feature (result, \"%s\");\n", | |
f65ff9f9 | 1369 | e->name.c_str ()); |
6eb1e6a8 YQ |
1370 | } |
1371 | ||
25aa13e5 YQ |
1372 | void visit_post (const tdesc_feature *e) override |
1373 | {} | |
1374 | ||
6eb1e6a8 YQ |
1375 | void visit_post (const target_desc *e) override |
1376 | { | |
1377 | printf_unfiltered ("\n tdesc_%s = result;\n", m_function); | |
1378 | printf_unfiltered ("}\n"); | |
1379 | } | |
1380 | ||
d4a0e8b5 SM |
1381 | void visit (const tdesc_type_builtin *type) override |
1382 | { | |
1383 | error (_("C output is not supported type \"%s\"."), type->name.c_str ()); | |
1384 | } | |
1385 | ||
1386 | void visit (const tdesc_type_vector *type) override | |
6eb1e6a8 | 1387 | { |
d4a0e8b5 | 1388 | if (!m_printed_element_type) |
6eb1e6a8 | 1389 | { |
d4a0e8b5 SM |
1390 | printf_unfiltered (" tdesc_type *element_type;\n"); |
1391 | m_printed_element_type = true; | |
6eb1e6a8 YQ |
1392 | } |
1393 | ||
d4a0e8b5 SM |
1394 | printf_unfiltered |
1395 | (" element_type = tdesc_named_type (feature, \"%s\");\n", | |
1396 | type->element_type->name.c_str ()); | |
1397 | printf_unfiltered | |
1398 | (" tdesc_create_vector (feature, \"%s\", element_type, %d);\n", | |
1399 | type->name.c_str (), type->count); | |
1400 | ||
1401 | printf_unfiltered ("\n"); | |
1402 | } | |
1403 | ||
1404 | void visit (const tdesc_type_with_fields *type) override | |
1405 | { | |
1406 | if (!m_printed_type_with_fields) | |
6eb1e6a8 | 1407 | { |
d4a0e8b5 SM |
1408 | printf_unfiltered (" tdesc_type_with_fields *type_with_fields;\n"); |
1409 | m_printed_type_with_fields = true; | |
1410 | } | |
1411 | ||
6eb1e6a8 YQ |
1412 | switch (type->kind) |
1413 | { | |
6eb1e6a8 YQ |
1414 | case TDESC_TYPE_STRUCT: |
1415 | case TDESC_TYPE_FLAGS: | |
1416 | if (type->kind == TDESC_TYPE_STRUCT) | |
1417 | { | |
1418 | printf_unfiltered | |
d4a0e8b5 | 1419 | (" type_with_fields = tdesc_create_struct (feature, \"%s\");\n", |
082b9140 | 1420 | type->name.c_str ()); |
d4a0e8b5 | 1421 | if (type->size != 0) |
6eb1e6a8 | 1422 | printf_unfiltered |
d4a0e8b5 | 1423 | (" tdesc_set_struct_size (type_with_fields, %d);\n", type->size); |
6eb1e6a8 YQ |
1424 | } |
1425 | else | |
1426 | { | |
1427 | printf_unfiltered | |
d4a0e8b5 SM |
1428 | (" type_with_fields = tdesc_create_flags (feature, \"%s\", %d);\n", |
1429 | type->name.c_str (), type->size); | |
6eb1e6a8 | 1430 | } |
d4a0e8b5 | 1431 | for (const tdesc_type_field &f : type->fields) |
6eb1e6a8 YQ |
1432 | { |
1433 | const char *type_name; | |
1434 | ||
d05200d1 SM |
1435 | gdb_assert (f.type != NULL); |
1436 | type_name = f.type->name.c_str (); | |
6eb1e6a8 YQ |
1437 | |
1438 | /* To minimize changes to generated files, don't emit type | |
1439 | info for fields that have defaulted types. */ | |
d05200d1 | 1440 | if (f.start != -1) |
6eb1e6a8 | 1441 | { |
d05200d1 SM |
1442 | gdb_assert (f.end != -1); |
1443 | if (f.type->kind == TDESC_TYPE_BOOL) | |
6eb1e6a8 | 1444 | { |
d05200d1 | 1445 | gdb_assert (f.start == f.end); |
6eb1e6a8 | 1446 | printf_unfiltered |
d4a0e8b5 | 1447 | (" tdesc_add_flag (type_with_fields, %d, \"%s\");\n", |
d05200d1 | 1448 | f.start, f.name.c_str ()); |
6eb1e6a8 | 1449 | } |
d4a0e8b5 SM |
1450 | else if ((type->size == 4 && f.type->kind == TDESC_TYPE_UINT32) |
1451 | || (type->size == 8 | |
d05200d1 | 1452 | && f.type->kind == TDESC_TYPE_UINT64)) |
6eb1e6a8 YQ |
1453 | { |
1454 | printf_unfiltered | |
d4a0e8b5 | 1455 | (" tdesc_add_bitfield (type_with_fields, \"%s\", %d, %d);\n", |
d05200d1 | 1456 | f.name.c_str (), f.start, f.end); |
6eb1e6a8 YQ |
1457 | } |
1458 | else | |
1459 | { | |
a8d2e585 SM |
1460 | printf_field_type_assignment |
1461 | ("tdesc_named_type (feature, \"%s\");\n", | |
6eb1e6a8 YQ |
1462 | type_name); |
1463 | printf_unfiltered | |
d4a0e8b5 | 1464 | (" tdesc_add_typed_bitfield (type_with_fields, \"%s\"," |
6eb1e6a8 | 1465 | " %d, %d, field_type);\n", |
d05200d1 | 1466 | f.name.c_str (), f.start, f.end); |
6eb1e6a8 YQ |
1467 | } |
1468 | } | |
1469 | else /* Not a bitfield. */ | |
1470 | { | |
d05200d1 | 1471 | gdb_assert (f.end == -1); |
6eb1e6a8 | 1472 | gdb_assert (type->kind == TDESC_TYPE_STRUCT); |
a8d2e585 SM |
1473 | printf_field_type_assignment |
1474 | ("tdesc_named_type (feature, \"%s\");\n", type_name); | |
6eb1e6a8 | 1475 | printf_unfiltered |
d4a0e8b5 | 1476 | (" tdesc_add_field (type_with_fields, \"%s\", field_type);\n", |
d05200d1 | 1477 | f.name.c_str ()); |
6eb1e6a8 YQ |
1478 | } |
1479 | } | |
1480 | break; | |
1481 | case TDESC_TYPE_UNION: | |
1482 | printf_unfiltered | |
d4a0e8b5 | 1483 | (" type_with_fields = tdesc_create_union (feature, \"%s\");\n", |
082b9140 | 1484 | type->name.c_str ()); |
d4a0e8b5 | 1485 | for (const tdesc_type_field &f : type->fields) |
6eb1e6a8 | 1486 | { |
a8d2e585 SM |
1487 | printf_field_type_assignment |
1488 | ("tdesc_named_type (feature, \"%s\");\n", f.type->name.c_str ()); | |
6eb1e6a8 | 1489 | printf_unfiltered |
d4a0e8b5 | 1490 | (" tdesc_add_field (type_with_fields, \"%s\", field_type);\n", |
d05200d1 | 1491 | f.name.c_str ()); |
6eb1e6a8 YQ |
1492 | } |
1493 | break; | |
1494 | case TDESC_TYPE_ENUM: | |
1495 | printf_unfiltered | |
d4a0e8b5 SM |
1496 | (" type_with_fields = tdesc_create_enum (feature, \"%s\", %d);\n", |
1497 | type->name.c_str (), type->size); | |
1498 | for (const tdesc_type_field &f : type->fields) | |
6eb1e6a8 | 1499 | printf_unfiltered |
d4a0e8b5 | 1500 | (" tdesc_add_enum_value (type_with_fields, %d, \"%s\");\n", |
d05200d1 | 1501 | f.start, f.name.c_str ()); |
6eb1e6a8 YQ |
1502 | break; |
1503 | default: | |
082b9140 | 1504 | error (_("C output is not supported type \"%s\"."), type->name.c_str ()); |
6eb1e6a8 | 1505 | } |
d4a0e8b5 | 1506 | |
6eb1e6a8 YQ |
1507 | printf_unfiltered ("\n"); |
1508 | } | |
1509 | ||
1510 | void visit (const tdesc_reg *reg) override | |
1511 | { | |
1512 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", %ld, %d, ", | |
a8142ee1 SM |
1513 | reg->name.c_str (), reg->target_regnum, |
1514 | reg->save_restore); | |
1515 | if (!reg->group.empty ()) | |
1516 | printf_unfiltered ("\"%s\", ", reg->group.c_str ()); | |
6eb1e6a8 YQ |
1517 | else |
1518 | printf_unfiltered ("NULL, "); | |
a8142ee1 | 1519 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type.c_str ()); |
6eb1e6a8 YQ |
1520 | } |
1521 | ||
25aa13e5 YQ |
1522 | protected: |
1523 | std::string m_filename_after_features; | |
1524 | ||
6eb1e6a8 | 1525 | private: |
a8d2e585 SM |
1526 | |
1527 | /* Print an assignment to the field_type variable. Print the declaration | |
1528 | of field_type if that has not been done yet. */ | |
6e8c24fe | 1529 | ATTRIBUTE_PRINTF (2, 3) |
a8d2e585 SM |
1530 | void printf_field_type_assignment (const char *fmt, ...) |
1531 | { | |
1532 | if (!m_printed_field_type) | |
1533 | { | |
1534 | printf_unfiltered (" tdesc_type *field_type;\n"); | |
1535 | m_printed_field_type = true; | |
1536 | } | |
1537 | ||
1538 | printf_unfiltered (" field_type = "); | |
1539 | ||
1540 | va_list args; | |
1541 | va_start (args, fmt); | |
1542 | vprintf_unfiltered (fmt, args); | |
1543 | va_end (args); | |
1544 | } | |
1545 | ||
6eb1e6a8 | 1546 | char *m_function; |
d4a0e8b5 SM |
1547 | |
1548 | /* Did we print "struct tdesc_type *element_type;" yet? */ | |
1549 | bool m_printed_element_type = false; | |
1550 | ||
1551 | /* Did we print "struct tdesc_type_with_fields *element_type;" yet? */ | |
1552 | bool m_printed_type_with_fields = false; | |
1553 | ||
1554 | /* Did we print "struct tdesc_type *field_type;" yet? */ | |
6eb1e6a8 | 1555 | bool m_printed_field_type = false; |
6eb1e6a8 YQ |
1556 | }; |
1557 | ||
25aa13e5 YQ |
1558 | /* Print target description feature in C. */ |
1559 | ||
1560 | class print_c_feature : public print_c_tdesc | |
1561 | { | |
1562 | public: | |
1563 | print_c_feature (std::string &file) | |
1564 | : print_c_tdesc (file) | |
1565 | { | |
1566 | /* Trim ".tmp". */ | |
1567 | auto const pos = m_filename_after_features.find_last_of ('.'); | |
1568 | ||
1569 | m_filename_after_features = m_filename_after_features.substr (0, pos); | |
1570 | } | |
1571 | ||
1572 | void visit_pre (const target_desc *e) override | |
1573 | { | |
1574 | printf_unfiltered (" Original: %s */\n\n", | |
1575 | lbasename (m_filename_after_features.c_str ())); | |
1576 | ||
f46cd62a | 1577 | printf_unfiltered ("#include \"common/tdesc.h\"\n"); |
25aa13e5 YQ |
1578 | printf_unfiltered ("\n"); |
1579 | } | |
1580 | ||
1581 | void visit_post (const target_desc *e) override | |
1582 | {} | |
1583 | ||
1584 | void visit_pre (const tdesc_feature *e) override | |
1585 | { | |
1586 | std::string name (m_filename_after_features); | |
1587 | ||
1588 | auto pos = name.find_first_of ('.'); | |
1589 | ||
1590 | name = name.substr (0, pos); | |
1591 | std::replace (name.begin (), name.end (), '/', '_'); | |
1592 | std::replace (name.begin (), name.end (), '-', '_'); | |
1593 | ||
1594 | printf_unfiltered ("static int\n"); | |
1595 | printf_unfiltered ("create_feature_%s ", name.c_str ()); | |
1596 | printf_unfiltered ("(struct target_desc *result, long regnum)\n"); | |
1597 | ||
1598 | printf_unfiltered ("{\n"); | |
1599 | printf_unfiltered (" struct tdesc_feature *feature;\n"); | |
0abe8a89 YQ |
1600 | |
1601 | printf_unfiltered | |
3b74854b AH |
1602 | ("\n feature = tdesc_create_feature (result, \"%s\");\n", |
1603 | e->name.c_str ()); | |
25aa13e5 YQ |
1604 | } |
1605 | ||
1606 | void visit_post (const tdesc_feature *e) override | |
1607 | { | |
1608 | printf_unfiltered (" return regnum;\n"); | |
1609 | printf_unfiltered ("}\n"); | |
1610 | } | |
1611 | ||
1612 | void visit (const tdesc_reg *reg) override | |
1613 | { | |
ea03d0d3 YQ |
1614 | /* Most "reg" in XML target descriptions don't have "regnum" |
1615 | attribute, so the register number is allocated sequentially. | |
1616 | In case that reg has "regnum" attribute, register number | |
1617 | should be set by that explicitly. */ | |
1618 | ||
1619 | if (reg->target_regnum < m_next_regnum) | |
1620 | { | |
1621 | /* The integrity check, it can catch some errors on register | |
1622 | number collision, like this, | |
1623 | ||
1624 | <reg name="x0" bitsize="32"/> | |
1625 | <reg name="x1" bitsize="32"/> | |
1626 | <reg name="x2" bitsize="32"/> | |
1627 | <reg name="x3" bitsize="32"/> | |
1628 | <reg name="ps" bitsize="32" regnum="3"/> | |
1629 | ||
1630 | but it also has false negatives. The target description | |
1631 | below is correct, | |
1632 | ||
1633 | <reg name="x1" bitsize="32" regnum="1"/> | |
1634 | <reg name="x3" bitsize="32" regnum="3"/> | |
1635 | <reg name="x2" bitsize="32" regnum="2"/> | |
1636 | <reg name="x4" bitsize="32" regnum="4"/> | |
1637 | ||
1638 | but it is not a good practice, so still error on this, | |
1639 | and also print the message so that it can be saved in the | |
1640 | generated c file. */ | |
1641 | ||
1642 | printf_unfiltered ("ERROR: \"regnum\" attribute %ld ", | |
1643 | reg->target_regnum); | |
1644 | printf_unfiltered ("is not the largest number (%d).\n", | |
1645 | m_next_regnum); | |
1646 | error (_("\"regnum\" attribute %ld is not the largest number (%d)."), | |
1647 | reg->target_regnum, m_next_regnum); | |
1648 | } | |
1649 | ||
1650 | if (reg->target_regnum > m_next_regnum) | |
1651 | { | |
1652 | printf_unfiltered (" regnum = %ld;\n", reg->target_regnum); | |
1653 | m_next_regnum = reg->target_regnum; | |
1654 | } | |
1655 | ||
25aa13e5 | 1656 | printf_unfiltered (" tdesc_create_reg (feature, \"%s\", regnum++, %d, ", |
a8142ee1 SM |
1657 | reg->name.c_str (), reg->save_restore); |
1658 | if (!reg->group.empty ()) | |
1659 | printf_unfiltered ("\"%s\", ", reg->group.c_str ()); | |
25aa13e5 YQ |
1660 | else |
1661 | printf_unfiltered ("NULL, "); | |
a8142ee1 | 1662 | printf_unfiltered ("%d, \"%s\");\n", reg->bitsize, reg->type.c_str ()); |
ea03d0d3 YQ |
1663 | |
1664 | m_next_regnum++; | |
25aa13e5 YQ |
1665 | } |
1666 | ||
ea03d0d3 YQ |
1667 | private: |
1668 | /* The register number to use for the next register we see. */ | |
1669 | int m_next_regnum = 0; | |
25aa13e5 YQ |
1670 | }; |
1671 | ||
e98577a9 AH |
1672 | /* See common/tdesc.h. */ |
1673 | ||
1674 | const char * | |
1675 | tdesc_get_features_xml (const target_desc *tdesc) | |
1676 | { | |
1677 | if (tdesc->xmltarget == nullptr) | |
1678 | { | |
1679 | std::string buffer ("@"); | |
1680 | print_xml_feature v (&buffer); | |
1681 | tdesc->accept (v); | |
1682 | tdesc->xmltarget = xstrdup (buffer.c_str ()); | |
1683 | } | |
1684 | return tdesc->xmltarget; | |
1685 | } | |
1686 | ||
81adfced | 1687 | static void |
e100df1a | 1688 | maint_print_c_tdesc_cmd (const char *args, int from_tty) |
81adfced DJ |
1689 | { |
1690 | const struct target_desc *tdesc; | |
6eb1e6a8 | 1691 | const char *filename; |
81adfced | 1692 | |
8e2141c6 YQ |
1693 | if (args == NULL) |
1694 | { | |
1695 | /* Use the global target-supplied description, not the current | |
1696 | architecture's. This lets a GDB for one architecture generate C | |
1697 | for another architecture's description, even though the gdbarch | |
1698 | initialization code will reject the new description. */ | |
1699 | tdesc = current_target_desc; | |
1700 | filename = target_description_filename; | |
1701 | } | |
1702 | else | |
1703 | { | |
1704 | /* Use the target description from the XML file. */ | |
1705 | filename = args; | |
1706 | tdesc = file_read_description_xml (filename); | |
1707 | } | |
1708 | ||
81adfced DJ |
1709 | if (tdesc == NULL) |
1710 | error (_("There is no target description to print.")); | |
1711 | ||
8e2141c6 | 1712 | if (filename == NULL) |
81adfced DJ |
1713 | error (_("The current target description did not come from an XML file.")); |
1714 | ||
6eb1e6a8 YQ |
1715 | std::string filename_after_features (filename); |
1716 | auto loc = filename_after_features.rfind ("/features/"); | |
4e2f8df6 | 1717 | |
6eb1e6a8 YQ |
1718 | if (loc != std::string::npos) |
1719 | filename_after_features = filename_after_features.substr (loc + 10); | |
4e2f8df6 | 1720 | |
25aa13e5 YQ |
1721 | /* Print c files for target features instead of target descriptions, |
1722 | because c files got from target features are more flexible than the | |
1723 | counterparts. */ | |
6c73f67f YQ |
1724 | if (startswith (filename_after_features.c_str (), "i386/32bit-") |
1725 | || startswith (filename_after_features.c_str (), "i386/64bit-") | |
506fe5f4 | 1726 | || startswith (filename_after_features.c_str (), "i386/x32-core.xml") |
49bdb7ee AH |
1727 | || startswith (filename_after_features.c_str (), "tic6x-") |
1728 | || startswith (filename_after_features.c_str (), "aarch64")) | |
25aa13e5 YQ |
1729 | { |
1730 | print_c_feature v (filename_after_features); | |
81adfced | 1731 | |
25aa13e5 YQ |
1732 | tdesc->accept (v); |
1733 | } | |
1734 | else | |
1735 | { | |
1736 | print_c_tdesc v (filename_after_features); | |
1737 | ||
1738 | tdesc->accept (v); | |
1739 | } | |
81adfced DJ |
1740 | } |
1741 | ||
27d41eac YQ |
1742 | namespace selftests { |
1743 | ||
1744 | static std::vector<std::pair<const char*, const target_desc *>> xml_tdesc; | |
1745 | ||
1746 | #if GDB_SELF_TEST | |
1747 | ||
1748 | /* See target-descritpions.h. */ | |
1749 | ||
1750 | void | |
1751 | record_xml_tdesc (const char *xml_file, const struct target_desc *tdesc) | |
1752 | { | |
1753 | xml_tdesc.emplace_back (xml_file, tdesc); | |
1754 | } | |
1755 | #endif | |
1756 | ||
1757 | } | |
1758 | ||
e98577a9 AH |
1759 | /* Test the convesion process of a target description to/from xml: Take a target |
1760 | description TDESC, convert to xml, back to a description, and confirm the new | |
1761 | tdesc is identical to the original. */ | |
1762 | static bool | |
1763 | maintenance_check_tdesc_xml_convert (const target_desc *tdesc, const char *name) | |
1764 | { | |
1765 | const char *xml = tdesc_get_features_xml (tdesc); | |
1766 | ||
1767 | if (xml == nullptr || *xml != '@') | |
1768 | { | |
1769 | printf_filtered (_("Could not convert description for %s to xml.\n"), | |
1770 | name); | |
1771 | return false; | |
1772 | } | |
1773 | ||
1774 | const target_desc *tdesc_trans = string_read_description_xml (xml + 1); | |
1775 | ||
1776 | if (tdesc_trans == nullptr) | |
1777 | { | |
1778 | printf_filtered (_("Could not convert description for %s from xml.\n"), | |
1779 | name); | |
1780 | return false; | |
1781 | } | |
1782 | else if (*tdesc != *tdesc_trans) | |
1783 | { | |
1784 | printf_filtered (_("Converted description for %s does not match.\n"), | |
1785 | name); | |
1786 | return false; | |
1787 | } | |
1788 | return true; | |
1789 | } | |
1790 | ||
1791 | ||
27d41eac YQ |
1792 | /* Check that the target descriptions created dynamically by |
1793 | architecture-specific code equal the descriptions created from XML files | |
1794 | found in the specified directory DIR. */ | |
1795 | ||
1796 | static void | |
e100df1a | 1797 | maintenance_check_xml_descriptions (const char *dir, int from_tty) |
27d41eac YQ |
1798 | { |
1799 | if (dir == NULL) | |
1800 | error (_("Missing dir name")); | |
1801 | ||
1802 | gdb::unique_xmalloc_ptr<char> dir1 (tilde_expand (dir)); | |
1803 | std::string feature_dir (dir1.get ()); | |
1804 | unsigned int failed = 0; | |
1805 | ||
1806 | for (auto const &e : selftests::xml_tdesc) | |
1807 | { | |
1808 | std::string tdesc_xml = (feature_dir + SLASH_STRING + e.first); | |
1809 | const target_desc *tdesc | |
1810 | = file_read_description_xml (tdesc_xml.data ()); | |
1811 | ||
1812 | if (tdesc == NULL || *tdesc != *e.second) | |
e98577a9 AH |
1813 | { |
1814 | printf_filtered ( _("Descriptions for %s do not match.\n"), e.first); | |
1815 | failed++; | |
1816 | } | |
1817 | else if (!maintenance_check_tdesc_xml_convert (tdesc, e.first) | |
1818 | || !maintenance_check_tdesc_xml_convert (e.second, e.first)) | |
27d41eac YQ |
1819 | failed++; |
1820 | } | |
1821 | printf_filtered (_("Tested %lu XML files, %d failed\n"), | |
1822 | (long) selftests::xml_tdesc.size (), failed); | |
1823 | } | |
1824 | ||
23181151 DJ |
1825 | void |
1826 | _initialize_target_descriptions (void) | |
1827 | { | |
123dc839 DJ |
1828 | tdesc_data = gdbarch_data_register_pre_init (tdesc_data_init); |
1829 | ||
23181151 DJ |
1830 | add_prefix_cmd ("tdesc", class_maintenance, set_tdesc_cmd, _("\ |
1831 | Set target description specific variables."), | |
1832 | &tdesc_set_cmdlist, "set tdesc ", | |
1833 | 0 /* allow-unknown */, &setlist); | |
1834 | add_prefix_cmd ("tdesc", class_maintenance, show_tdesc_cmd, _("\ | |
1835 | Show target description specific variables."), | |
1836 | &tdesc_show_cmdlist, "show tdesc ", | |
1837 | 0 /* allow-unknown */, &showlist); | |
1838 | add_prefix_cmd ("tdesc", class_maintenance, unset_tdesc_cmd, _("\ | |
1839 | Unset target description specific variables."), | |
1840 | &tdesc_unset_cmdlist, "unset tdesc ", | |
1841 | 0 /* allow-unknown */, &unsetlist); | |
1842 | ||
1843 | add_setshow_filename_cmd ("filename", class_obscure, | |
6ecd4729 | 1844 | &tdesc_filename_cmd_string, |
23181151 DJ |
1845 | _("\ |
1846 | Set the file to read for an XML target description"), _("\ | |
1847 | Show the file to read for an XML target description"), _("\ | |
1848 | When set, GDB will read the target description from a local\n\ | |
1849 | file instead of querying the remote target."), | |
1850 | set_tdesc_filename_cmd, | |
1851 | show_tdesc_filename_cmd, | |
1852 | &tdesc_set_cmdlist, &tdesc_show_cmdlist); | |
1853 | ||
1854 | add_cmd ("filename", class_obscure, unset_tdesc_filename_cmd, _("\ | |
1855 | Unset the file to read for an XML target description. When unset,\n\ | |
1856 | GDB will read the description from the target."), | |
1857 | &tdesc_unset_cmdlist); | |
81adfced DJ |
1858 | |
1859 | add_cmd ("c-tdesc", class_maintenance, maint_print_c_tdesc_cmd, _("\ | |
1860 | Print the current target description as a C source file."), | |
1861 | &maintenanceprintlist); | |
27d41eac YQ |
1862 | |
1863 | cmd_list_element *cmd; | |
1864 | ||
1865 | cmd = add_cmd ("xml-descriptions", class_maintenance, | |
1866 | maintenance_check_xml_descriptions, _("\ | |
1867 | Check the target descriptions created in GDB equal the descriptions\n\ | |
1868 | created from XML files in the directory.\n\ | |
1869 | The parameter is the directory name."), | |
1870 | &maintenancechecklist); | |
1871 | set_cmd_completer (cmd, filename_completer); | |
23181151 | 1872 | } |